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Finding the Fourth Proportional to 1,257,768,982.80, 1,888,354,085.40 and 798,603,958.80

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Solution

The fourth proportional to 1,257,768,982.80, 1,888,354,085.40 and 798,603,958.80 is: 1,198,985,719.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,257,768,982.80 : 1,888,354,085.40 = 798,603,958.80 : x
  2. Step 2: Convert to fraction form
    1,257,768,982.80/1,888,354,085.40 = 798,603,958.80/x
  3. Step 3: Cross multiply
    1,257,768,982.80x = 1,888,354,085.40 × 798,603,958.80
  4. Step 4: Simplify right side
    1,257,768,982.80x = 1,508,047,048,216,593,152
  5. Step 5: Solve for x
    x = 1,508,047,048,216,593,152/1,257,768,982.80
  6. Step 6: Final answer
    x = 1,198,985,719.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.